The exact procedure (and its possibility at all) depends on where exactly the private key is physically stored (in a Windows system store or on a hardware module). If the private key is managed by Windows, in most cases you can re-use the same TElMemoryCertStorage instance for signing all documents. You can pass the password programmatically via TElX509Certificate.KeyMaterial.SignaturePIN and TElX509Certificate.KeyMaterial.KeyExchangePIN properties.

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